Michael Balcon

Professor Marcus and his gang of vicious bank robbers rent a room from an elderly widow. When she begins to meddle in their 'perfect crime', the crooks decide she must be killed ... but can they?

"Richard Hannay is on vacation in London when he meets a mysterious woman who tells him of a spy ring which she is trying to crack. She doesn't know the identity of the masterspy, but does know a few revealing details. Later she is murdered-- before Hannay can learn anything more. His own life now in danger, Hannay sets out to solve a mystery."--Container.